Cheepskipper is a species of Cheep-Cheep that is the boss of World 3 in New Super Mario Bros. It appears to be a giant purple Cheep-Cheep with a white underbelly. It also has yellow spots, a yellow fin, red lips, and two giant sharp fangs. Cheepskipper attacks at first by jumping out of the water and bouncing once on the bridge and back into the water. Cheepskipper always bounces out from right to left. When Cheepskipper jumps out, Mario or Luigi have their chance of jumping on it to attack it. After jumping on it three times, or hitting it with nine fireballs, Cheepskipper is defeated and gives Mario and Luigi the key to access World 5.